- Apr 26, 2018
- Southern California
- Multi Format
If you know where to look, Glycin was clearly subjected to major research lab tests in the 50s/60s vis-a-vis HQMS and found wanting - and what that says is that an appropriately formulated PQ developer should be at least equal if not markedly better and cheaper to produce than one with Glycin. Which is not to say that under specific conditions, Glycin may have offered benefits in terms of formulation prior to better understanding of HQMS formation and exploitation. Ilfosol 3 can be astonishingly sharp.
Bill Troop still (e.g., since his Second Edition) says Glycin [corrected spelling] is the most undervalued developing agent. He mentions a Formulary developer, which may be Formulary 12 (Edwal 12), PPD/Glycine/Metol. It is still available.